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Finding the Fourth Proportional to 817,488.80, 1,228,306.80 and 726,250.40

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Solution

The fourth proportional to 817,488.80, 1,228,306.80 and 726,250.40 is: 1,091,217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,488.80 : 1,228,306.80 = 726,250.40 : x
  2. Step 2: Convert to fraction form
    817,488.80/1,228,306.80 = 726,250.40/x
  3. Step 3: Cross multiply
    817,488.80x = 1,228,306.80 × 726,250.40
  4. Step 4: Simplify right side
    817,488.80x = 892,058,304,822.72
  5. Step 5: Solve for x
    x = 892,058,304,822.72/817,488.80
  6. Step 6: Final answer
    x = 1,091,217.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.